Cover for a lock box



FIG. 1 is a perspective view of a cover for a door lock showing my newdesign; the broken lines showing of a padlock, doorknob and door are forillustrative purpose only and form no part of the claimed design;

FIG. 2 is a top plan view of a cover for a door lock; shown in anexpanded position;

FIG. 3 is a front elevational view thereof; the rear elevational viewbeing a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a right side elevational view thereof; the left sideelevational view being a mirror image thereof.

The ornamental design for a cover for a lock box, as shown anddescribed.